Grip Module Brace Assembly

ABSTRACT

Representative implementations of devices and techniques provide a handgun lower receiver to be used with firing components from a donor handgun. The lower receiver includes additional features to improve stability during a triggering event. The additional features can include a rear attachment port comprising a receptacle with a cavity for receiving a brace extension component. The receptacle can have one or more coupling features for coupling the brace extension component to the rear attachment port.

PRIORITY CLAIM AND CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit under 35 U.S.C. § 119(e)(1) of U.S. Provisional Application No. 63/194,066, filed May 27, 2021, which is hereby incorporated by reference in its entirety.

BACKGROUND

Implements, such as handguns and the like, may benefit from accessories that can improve the stability of the implement during its use. Greater stability can improve performance, including accuracy and precision. In the case of a handgun, the stability of the handgun can depend on multiple factors, many of which lie outside the design of the handgun. For example, among the various factors that can affect the stability of a handgun during its use are the user's experience and skill, the user's size and strength, the user's technique or grip on the handgun, the user's stance or body position, the user's ability to concentrate and so forth.

Users may also benefit from accessories that can help to reduce fatigue or to reduce the effects of fatigue while using such implements.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed description is set forth with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The use of the same reference numbers in different figures indicates similar or identical items.

For this discussion, the devices and systems illustrated in the figures are shown as having a multiplicity of components. Various implementations of devices and/or systems, as described herein, may include fewer components and remain within the scope of the disclosure. Alternately, other implementations of devices and/or systems may include additional components, or various combinations of the described components, and remain within the scope of the disclosure. Shapes and/or dimensions shown in the illustrations of the figures are for example, and other shapes and or dimensions may be used and remain within the scope of the disclosure, unless specified otherwise.

FIG. 1 shows a rear perspective view of an example grip module, according to an implementation.

FIGS. 2 and 3 show a side view of an example grip module, according to two implementations.

FIG. 3 shows a side view of an example grip module, according to another implementation.

FIG. 4 shows a top view of an example grip module, according to an implementation.

FIG. 5 shows a bottom view of an example grip module, according to an implementation.

FIG. 6 shows a back view of an example grip module, according to an implementation.

FIG. 7 shows a front view of an example grip module, according to an implementation.

FIG. 8 shows a rear perspective view of an example grip module brace assembly, according to an implementation.

FIG. 9 shows an exploded view of an example grip module brace assembly, according to an implementation.

FIG. 10 is a flow diagram illustrating an example process of stabilizing a handgun, according to an implementation.

DETAILED DESCRIPTION

Representative implementations of devices and techniques provide a grip module 100 and a grip module brace assembly 800 (such as for a handgun, for example) comprising a lower receiver grip module (“grip module 100”) with an integrated rear attachment port 102 and one or more arm brace components 802. For instance, the grip module 100 comprises a unified frame or lower receiver component (which may be a single integrated unit or an assembly comprising multiple sections) arranged to receive the trigger and firing group and upper components from a semi-automatic pistol (or like handgun, etc.). The upper components can include the slide, barrel, and recoil components of the handgun.

The grip module 100 includes a trigger guard 104 and magazine well 106, and may include an accessory rail 108 or other similar features. The grip module 100 also includes an integrated rear attachment port 102 such as a rear attachment port comprising a receptacle with a cavity for receiving the one or more brace components 802. The receptacle has one or more coupling features for coupling the brace extension component(s) 802 to the rear attachment port 102. The brace components 802 may include extension components, grip components, or other components arranged to brace the grip module 100 to an arm or other portion of the user's body for improved stability. The grip module 100 plus brace components 802 comprises the grip module brace assembly 800.

The grip module 100 is configured to receive the components of a handgun, such as a semi-automatic pistol. In many cases, the grip module 100 can be custom manufactured to receive the components of a particular brand/model of handgun. In alternate embodiments, the grip module 100 may be manufactured to receive the components of more than one brand/model, or a range of models of handguns.

The attachment port 102 at the rear of the grip module 100 can be configured to receive a buffer tube common to many AR style rifles. This can allow a variety of brace or grip components to be attached to the grip module 100 via the buffer tube. For instance, third-party brace or grip components that are configured to attach to an AR style buffer tube may be used. Alternately, the buffer tube (or like extension component) may have a proprietary design, including one or more proprietary attachment configurations that allow proprietary brace or grip components to be attached thereon.

Unlike AR style lower receivers, some of which are used in short form-factor AR style rifles (sometimes inaccurately referred to as “AR pistols”), the grip module 100 is not configured to receive an AR style upper receiver, firing group, or barrel, like AR lower receivers are. The grip module 100 is not configured to be a modular AR style lower receiver, and will not work with AR style rifle firing components. In embodiments where the grip module 100 is configured to receive an AR style buffer tube, this configuration is for convenience of use with specific AR style brace or grip accessories, but not AR style firing components, upper receiver, or barrel.

The descriptions herein refer to a primary axis of the grip module 100, defined as an axis running from the rear attachment port 102 (where the brace component(s) 802 can be attached), along the top surface of the grip module 100 (including the slide attachment rail 110), to the front of the grip module 100 (where the opening of the barrel is intended to be located). This primary axis is convenient for consistency in discussing the orientation of various components and their movement relative to the grip module 100. For example, the movement of the handgun slide would be on an axis parallel to the primary axis. The use of the terms “top” and “bottom” and so forth, are for convenience in describing the grip module 100 and the grip module brace assembly 800 and their components, and does not limit the possible orientations, or the manner in which the grip module 100 or the grip module brace assembly 800 may be used or carried on a person.

Example Grip Module

FIGS. 1-7 illustrate various views of example grip modules 100 according to various embodiments. FIGS. 8 and 9 illustrate embodiments of an example grip module 100 with brace components 802 attached, or in other words, a grip module brace assembly 800.

As shown in FIGS. 1-9 , the grip module 100 includes a body 101, comprising a frame or lower receiver for a firearm. The grip module 100 includes lower receiver features and components plus features and components not normally found on a handgun. For instance, the grip module 100 includes an integrated pistol-style hand grip 112 with a magazine well 106 integral to (within) the pistol grip 112. The magazine well 106 is accessible from the top or the bottom of the grip module 100 (see FIGS. 4 and 5 , for example). A magazine (not shown) can be inserted into the magazine well 106 from the bottom of the pistol grip 112, to feed from an opening at the top for loading a round into the firing chamber. A magazine release button 114 at an upper portion of the pistol grip 112 is pressed to release the magazine from the well 106.

The grip module 100 also includes a trigger guard 104 disposed in front of the pistol grip 112 that has an open area within its perimeter. The body 101 includes one or more cavities (including the magazine well 106) and one or more features configured to receive a trigger and firing group from a donor handgun. For example, a slot or opening 402 in the body 101 of the grip module 100 above the trigger guard 104 allows the trigger from a handgun firing group to be lowered through the opening 402 so as to be disposed within the perimeter of the trigger guard 104. The grip module 100 is configured to receive the trigger and firing group components from a donor semi-automatic handgun. For instance, the interior dimensions of the body 101 of the grip module 100, as well as various attachment points within the grip module 100 are constructed to engage and communicate with the trigger and firing group components of the donor handgun, so that the trigger and firing group components fit well and operate properly while positioned within the grip module 100.

In some embodiments, the grip module 100 is constructed to receive the trigger and firing group components of a specific brand and model of handgun. For example, the interior shape and dimensions of the grip module 100 may be specific to the trigger assembly and/or fire control unit of the donor handgun. In those embodiments, a number of unique grip modules 100 may be constructed to fit the components of each of a variety of handgun brands and models. In other embodiments, a grip module 100 may be constructed to fit the components of a range of models and/or brands of handguns.

When the firing group from a particular donor handgun is used, the slide, barrel, and recoil assembly from that particular donor handgun can generally also be used. Accordingly, the grip module 100 inner and outer features and dimensions are constructed to engage each of those upper handgun components as well. For example, the grip module 100 includes a slide attachment rail 110 along its top edge. The slide attachment rail 110 includes a pair of rails extending from a front extent of the body portion 101 a predetermined length along an upper edge of the body portion 101. The slide attachment rails 110 are similar to the slide attachment rails of the donor handgun, to allow the slide from the donor handgun to engage and move normally on the grip module 100 during operation. For example, the slide attachment rail 110 is adapted to slideably engage and mate with the lower edge of a handgun slide to slideably couple the handgun slide to the body portion 101. Also, the grip module 100 includes a recoil spring recessed area 116 beneath and between the slide attachment rails 110 to allow room for the recoil spring and rod in the body 101 of the grip module 100.

Because of the presence of the slide attachment rails 110 and recessed area 116, the operation of the slide and recoil assembly on the grip module 100 can be similar to or imitate the operation of these components on the donor handgun. The slide from a donor handgun is slideably engaged with the slide attachment rails 110 to attach the slide to the grip module 100. The slide can include the barrel and recoil spring and rod from the donor handgun when it is engaged to the grip module 100. During a triggering event, the slide moves backwards on the slide attachment rail 110, compressing the recoil spring on the rod and ejecting a spent cartridge casing through the ejection port on the slide. As the recoil spring pushes the slide forward on the slide attachment rails 110, the slide picks up a new cartridge from the magazine in the magazine well 106 of the grip module 100. If the magazine is empty, the slide remains locked in a rearward position on the slide attachment rails 110 rather than moving forward into a ready firing position.

As shown at FIGS. 1 and 3 , in some embodiments, the grip module 100 includes a slide recess 118 along the top edge of the grip module 100, toward the rear of the grip module 100. For example a slide recess 118 may be disposed along the top edge of the rear extension 120, to give room for the slide to function properly. For example, the slide recess 118 provides clearance for the slide to move over the rear extension 120 during recoil. The slide recess 118 can include one or more recessed or clearance areas behind the slide when the slide is in a ready fire position. This is the area of the grip module 100 that the slide travels over when the slide is moved backward during a triggering event. As shown, the slide recess 118 may include a notched area on the top edge of the grip module 100, or the like.

The grip module 100 may include one or more takedown components 910 (e.g., pins, levers, etc.) to allow the slide and upper components to remain locked to the grip module 100 until they are intentionally released (using the takedown components 910) for removal from the grip module 100. Examples are shown in the figures and other types of takedown components 910 are also contemplated. The grip module 100 can include one or more takedown openings 122 or like slots, holes, grooves, etc. that can be used with the takedown components 910 for locking and unlocking the slide and upper components to the grip module 100. For instance, a takedown component 910 may be inserted into a takedown opening 122 to lock the slide to the grip module 100, or may be removed from the takedown opening 122 to remove the slide and upper components from the grip module 100.

The grip module 100 may also include an accessory rail 108, such as a Picatinny-style rail, or the like, for mounting accessories (such as a light, laser, etc.) to the body 101 of the grip module 100. As shown in the figures, the accessory rail 108 may be disposed in front of the pistol grip 112 and trigger guard 104 on a section of the body 101 of the grip module 100. In other embodiments, an accessory rail 108 may be located at other places on the grip module 100.

Unique to the grip module 100 are a rear extension portion 120 of the grip module body 101 and a rear attachment port 102. In various implementations, the rear extension 120 and/or rear attachment port 102 may be integral with the remainder of the grip module body 101, integral with a portion of the grip module body 101, or may be coupled to a portion of the grip module body 101. For example, the rear extension 120 and/or rear attachment port 102 may be molded or machined (or otherwise constructed, e.g., 3D printed, etc.) during and as part of the grip module body 101 or as a portion of the grip module body 101. In such embodiments, the rear extension 120 and/or rear attachment port 102 may be comprised of the same materials as the grip module body 101.

The rear extension 120 is a rigid structure protruding a predetermined length from the rear portion of the grip module 100 above the pistol grip 112. The rear extension 120 extends the rear portion of the grip module 100 beyond the pistol grip 112 and beyond a rear portion of a corresponding handgun body. In some cases, the rear extension 120 may lengthen the overall length of the grip module 100 body by an amount that is up to one third to one half of the length of the corresponding handgun (e.g., donor handgun) body. In other embodiments, the rear extension 120 may lengthen the overall length of the grip module body 101 by an amount that is greater than one third to one half of the length of the corresponding handgun (e.g., donor handgun) body. The rear extension 120 comprises a rigid support for the rear attachment port 102.

The rear attachment port 102 can be integral to (or coupled to) the rear extension 120, and comprises a mounting receptacle for a buffer tube 804 or other detachable extension component (which may include off-the-shelf common extension components or proprietary extension components). For instance, the rear attachment port 102 may include a circular opening or receptacle for receiving and attaching a common buffer tube 804 (as common to AR style rifles). The buffer tube 804 is inserted into the rear attachment port 102, and may be screwed to the rear attachment port 102 via threads, or other connection techniques. For example, the buffer tube 804 may also be coupled to the rear attachment port 102 using a friction fit, a bayonet connection, a twist-lock, or various other engagement techniques and components.

The rear attachment port 102 may also have other shapes (e.g., polygonal, elliptical, irregular, or other shape receptacle or opening) and may also include notches, grooves, tabs, cut-outs, or other features 124 that intersect and/or are combined with the overall shape of the rear attachment port 102. For instance, the features 124 may engage or mate with corresponding features on the buffer tube 804 or extension component.

The rear attachment port 102 may include a threaded section 126 on an interior surface of the rear attachment port 102 to screw the buffer tube 804 to the grip module 100. Alternately, the rear attachment port 102 may have one or more various other attachment components on the interior and/or the exterior surfaces of the rear attachment port 102 (such as the features 124, for example), such as a pinned connection, different sized threads, a quick-release attachment, a dovetail, a bayonet attachment, a twist-lock attachment, locking grooves, teeth, tabs, pins, openings, or the like. When the buffer tube 804 is inserted into the rear attachment port 102, the features 124 or attachment components of the rear attachment port 102 engage and mate with corresponding features or attachment components on the buffer tube 804 (or other extension component), to lock the buffer tube 804 or extension component to the grip module 100 until intentionally released by the user.

Alternately, a coupler (not shown) may be used to interface between the rear attachment port 102 and a desired extension component. The coupler may include the attachment features 124 or components of each of the rear attachment port 102 and the desired extension component. In that case, the coupler can be interfaced with (coupled to) the rear attachment port 102 and the buffer tube 804 or other extension component can be interfaced with (coupled to) the coupler.

As shown at FIGS. 1 and 3 , in some cases the rear attachment port 102 includes an eye guard 128 protruding from an upper portion of the rear attachment port 102. The eye guard 128 is a raised shield that is integral to (or coupled to) the rear attachment port 102. The raised shield of the eye guard 128 may be comprised of the same materials as the rear attachment port 102, and may be several millimeters thick (e.g., 5 to 15 mm, or thicker) so as to be durable when handling the grip module 100. The eye guard 128 may be several millimeters tall (e.g., 10 to 20 mm, or taller) and is disposed at the end of the slide's travel to protect the user's face. In some examples, the shape of the eye guard 128 along its top surface 130 can be used as a rear sight. In other examples, the top surface 130 of the eye guard 128 can include mounting features 132 for mounting an accessory sight to the eye guard 128. For example, a separate sight (or like component) may be attached to the eye guard 128 as an accessory via the mounting features 132.

In some embodiments, as shown at FIG. 2 , the rear attachment port 102 is aligned with the main axis of the grip module 100. For instance, the angle of attachment of the buffer tube 804 or other extension component is nearly parallel (within 1 or 2 degrees) or parallel to the top edge of the grip module 100, the slide attachment rail 110, and the axis of slide travel. In another embodiment, as shown at FIGS. 1 and 3 , the rear attachment port 102 is angled downward at a predetermined angle “α” relative to the primary axis of the grip module 100. For instance, the angle of attachment of the buffer tube 804 or other extension component is angled the predetermined angle “α” with respect to the axis defined by top edge of the grip module 100, the slide attachment rail 110, and the axis of slide travel.

In the embodiment, the predetermined angle of connection “α” allows the buffer tube 804 or other extension component inserted into and coupled to the rear attachment port 102 to be angled downward from the rear of the grip module 100 at the predetermined angle “α” relative to the primary axis of the grip module 100. This downward angle “α” can be a more natural and stable angle when used with an arm brace 806, for instance. Further, the downward angle “α” can allow the user to get a better sight angle when sighting the grip module 100 or grip module brace assembly 800. In various embodiments, the predetermined angle “α” may be between 5 and 15 degrees down from the primary axis of the grip module 100.

Optionally, the predetermined angle “α” may be adjustable (for instance between 0 and 15 degrees, or more). In such an implementation, the rear extension 120 may be comprised of two or more components that pivot at a locking joint. This can allow the user to select the optimal angle for the buffer tube 804 or other extension component, and thus the optimal angle for an arm brace 806 or other component used with the extension.

Example Grip Module Brace Assembly

FIGS. 8 and 9 show examples of a grip module brace assembly 800, according to various embodiments. For convenience of illustration, the FIGS. 8 and 9 show the grip module 100 and the grip module brace assembly 800 together with the trigger and upper components of a donor handgun. The donor handgun components include a slide and a trigger assembly (fire control unit). FIG. 8 shows the components assembled together and FIG. 9 shows the components in an exploded view. Not shown, but also contemplated donor handgun components can include a magazine, a recoil spring and pin, and a barrel. As mentioned, most or all of the above components may be sourced from the same or a similar handgun. In some examples, optional or accessory components (or aftermarket components) may be included, such as a sight component or sight group, a light or laser, aftermarket trigger components, and the like.

As shown at FIGS. 8 and 9 , one or more arm brace components 802 may be used at the end of the grip module 100, removably coupled to the rear attachment port 102. The one or more arm brace components 802 may include an arm brace 806, forearm grip, or other brace component, a buffer tube 804 or extension, and the like. A brace extension component 804 (such as a buffer tube) may be coupled to the rear attachment port 102 and extend a predetermined length beyond the rear attachment port 102. An end of the brace extension component 804 is inserted into the cavity of the rear attachment port 102. In various examples, the brace extension component 804 can comprise a hollow or semi-hollow tube having a cross-section comprising at least one of a circle, an ellipse, or a polygon. The cross-section of the brace extension component 804 can match the shape of the opening of the rear attachment port 102 for a snug fit.

An arm brace 806 may be removably coupled to an opposite end of the brace extension component 804. The arm brace 806 is configured to grip the user's forearm to provide added stability while using the grip module 100 (i.e., grip module brace assembly 800). Other stability components may alternately be used with the buffer tube 804, including stability components common to AR style rifles, including grips, stocks, braces, pads, stabilizers, and the like. Further, like proprietary stability components may also be used. The addition of the buffer tube 804 or other extension component and the arm brace 806 to the grip module 100 comprises the grip module brace assembly 800, which may be presented as a unit apparatus. For instance, the grip module brace assembly 800 may be comprised of a set of separate components or may comprise an integrated unit.

Many of the components of the grip module 100 or the grip module brace assembly 800 may be comprised of rigid polymers such as injection molded thermoplastic elastomers (TPE), or the like. Alternately, the components of the grip module 100 or the grip module brace assembly 800 may be comprised of other rigid materials such as composites, metals, alloys, and so forth. Materials may be selected for desired strength combined with light weight.

The illustrations of FIGS. 1-9 are not intended to be limiting. The design of the grip module 100 and the grip module brace assembly 800, as well as the design of the various components may vary. Other components, devices, and techniques having the same or a similar function are also within the scope of the disclosure.

Although various implementations and examples are discussed herein, further implementations and examples may be possible by combining the features and elements of individual implementations and examples.

Representative Process

FIG. 10 illustrates a representative process 1000 for implementing techniques and/or devices relative to providing improved stability to a handgun during a triggering event. The techniques and devices include providing a grip module lower handgun receiver arranged to receive handgun upper components, including a slide, trigger and firing group from a donor handgun. Additionally, the grip module lower receiver is arranged to receive a barrel and recoil spring and pin from the donor handgun, as well as a magazine. The example process 1000 is described with reference to FIGS. 1-9 .

The order in which the process is described is not intended to be construed as a limitation, and any number of the described process blocks can be combined in any order to implement the process, or alternate processes. Additionally, individual blocks may be deleted from the process without departing from the spirit and scope of the subject matter described herein. Furthermore, the process can be implemented in any suitable hardware, software, firmware, or a combination thereof, without departing from the scope of the subject matter described herein.

At block 1002, the process includes providing a handgun lower receiver (such as the grip module 100, for example) including the components described at blocks 1004-1010.

At block 1004, the process includes providing a pistol grip having a magazine well integral with the pistol grip. At block 1006, the process includes providing a body portion integral to the pistol grip, having a cavity. At block 1008, the process includes providing a rear extension integral to the body portion, extending a predetermined length from the rear of the body portion. At block 1010, the process includes providing a rear attachment port integral to the rear extension. The rear extension comprises an integrated support structure for the rear attachment port and the rear attachment port comprises a receptacle with a cavity for receiving a brace extension component.

At block 1012, the process includes inserting a trigger and firing group from a donor handgun into the cavity of the body portion. At block 1014, the process includes slideably coupling a handgun slide from the donor handgun to the body portion by slideably engaging the handgun slide to a slide attachment rail on an upper portion of the body portion.

In an implementation, the process includes coupling a first end of a brace extension component to the rear attachment port using one or more features of the rear attachment port.

In one embodiment, the process includes coupling an arm grip to a second end of the brace extension component. The arm grip is adapted to grip a forearm of a user to provide stability during a triggering event. In one example, the brace extension component comprises an AR style rifle buffer tube. In other examples, the brace extension component comprises other extension components or accessories. In alternate embodiments, other brace or grip components may be coupled to the second end of the brace extension component, including a stock, a brace, a pad, a stabilizer, and so forth.

In an implementation, the top edge of the rear extension includes a notched slide recess. The notched slide recess comprises a recessed area that provides clearance for the slide to move over the rear extension during recoil.

In alternate implementations, other techniques may be included in the process in various combinations, and remain within the scope of the disclosure.

CONCLUSION

Although the implementations of the disclosure have been described in language specific to structural features and/or methodological acts, it is to be understood that the implementations are not necessarily limited to the specific features or acts described. 

What is claimed is:
 1. A handgun lower receiver, comprising: a pistol grip having a magazine well integral to the pistol grip; a body portion integral to the pistol grip having a cavity and one or more features configured to receive a trigger and firing group from a donor handgun; a slide attachment rail adapted to slideably engage and mate with a handgun slide to slideably couple the handgun slide to the body portion; and a rear attachment port comprising a receptacle with a cavity for receiving a brace extension component, the receptacle having one or more coupling features for coupling the brace extension component to the rear attachment port.
 2. The handgun lower receiver of claim 1, further comprising a rear extension portion integral to the body portion at a first end of the rear extension portion and to the rear attachment port at a second end of the rear extension portion, wherein the rear extension portion protrudes a predetermined length from a rear of the body portion and comprises a rigid support structure for the rear attachment port.
 3. The handgun lower receiver of claim 1, further comprising a brace extension component coupled to the rear attachment port and extending a predetermined length beyond the rear attachment port, wherein an end of the brace extension component is inserted into the cavity of the rear attachment port.
 4. The handgun lower receiver of claim 3, wherein the brace extension component comprises a hollow or semi-hollow tube having a cross-section comprising at least one of a circle, an ellipse, or a polygon.
 5. The handgun lower receiver of claim 1, further comprising an arm brace removably coupled to the body portion at the rear attachment port and arranged to grip an arm of a user.
 6. The handgun lower receiver of claim 5, wherein the arm brace is coupled at the rear attachment port via a brace extension component comprising a hollow or semi-hollow tube.
 7. The handgun lower receiver of claim 1, wherein the slide attachment rail includes a pair of rails extending from a front extent of the body portion a predetermined length along an upper edge of the body portion, the pair of rails is arranged to engage and mate with a lower edge portion of the handgun slide.
 8. A handgun lower receiver, comprising: a pistol grip having a magazine well integral with the pistol grip; a body portion integral to the pistol grip having a cavity and one or more features configured to receive a trigger and firing group from a donor handgun; a slide attachment rail including a pair of rails extending from a front extent of the body portion a predetermined length along an upper edge of the body portion, the pair of rails adapted to slideably engage and mate with a lower edge portion of a handgun slide to slideably couple the handgun slide to the body portion; a rear extension integral to the body portion, extending a predetermined length from a rear of the body portion, the rear extension comprising an integrated support structure for a rear attachment port; and a rear attachment port integral to the rear extension, the rear attachment port comprising a connection receptacle with a cavity for receiving an inserted brace extension component, the connection receptacle having one or more locking features for locking the brace extension component to the rear attachment port.
 9. The handgun lower receiver of claim 8, further comprising an eye guard protruding from an upper portion of the rear attachment port, the eye guard comprising an integrated shield to protect a user's face.
 10. The handgun lower receiver of claim 9, wherein the eye guard further comprises a sight mount, wherein the eye guard has one or more accessory sight mounting features on an upper surface of the eye guard.
 11. The handgun lower receiver of claim 8, further comprising an accessory rail disposed on a lower surface of the body portion in front of the pistol grip and a trigger guard.
 12. The handgun lower receiver of claim 8, further comprising a brace extension component coupled to the rear attachment port and coupled to the rear attachment port via one or more coupling features.
 13. The handgun lower receiver of claim 12, wherein the brace extension component comprises an AR style buffer tube.
 14. The handgun lower receiver of claim 12, further comprising an arm grip coupled to the brace extension component, the arm grip adapted to grip a forearm of a user to provide stability during a triggering event.
 15. The handgun lower receiver of claim 8, wherein the rear attachment port is angled downward at a predetermined angle relative to a primary axis of the lower receiver, such that a brace extension component inserted into and coupled to the rear attachment port is also angled downward at the predetermined angle relative to the primary axis of the lower receiver.
 16. A method comprising: providing a handgun lower receiver, including: a pistol grip having a magazine well integral with the pistol grip; a body portion integral to the pistol grip, having a cavity; a rear extension integral to the body portion, extending a predetermined length from a rear of the body portion; and a rear attachment port integral to the rear extension, the rear extension comprising an integrated support structure for the rear attachment port and the rear attachment port comprising a receptacle with a cavity for receiving a brace extension component; inserting a trigger and firing group from a donor handgun into the cavity of the body portion; and slideably coupling a handgun slide from the donor handgun to the body portion by slideably engaging the handgun slide to a slide attachment rail on an upper portion of the body portion.
 17. The method of claim 16, further comprising coupling a first end of a brace extension component to the rear attachment port using one or more features of the rear attachment port.
 18. The method of claim 17, further comprising coupling an arm grip to a second end of the brace extension component, the arm grip adapted to grip a forearm of a user to provide stability during a triggering event.
 19. The method of claim 17, wherein the brace extension component comprises an AR style rifle buffer tube.
 20. The method of claim 16, wherein a top edge of the rear extension includes a notched slide recess, the notched slide recess providing clearance for the handgun slide to move over the rear extension during recoil of a triggering event. 